Blue Violet Square Cushion Tanzanite Gemstone 13.21 CaratsOne 13. 21 carats square cushion tanzanite, blue violet exceptional color, FLAWLESS TO VVS clarity, cut grade excellent, measuring 13. 4 mm wide, 13. 6 mm long, 10. 2 mm deep; with excellent polish and excellent symmetry. The proportions of the tanzanite are as follows: total depth 75%, table width 53. 7%. The overall quality rating of this tanzanite is 979 out of 1000. This tanzaite is color enhanced by heating. Customize a Ring or Pendant with This